New memory section types for DMA
[betaflight.git] / src / main / drivers / bus_i2c_busdev.c
blobfd1035f4f73aee40432aa7c555a0b5699d1796b5
1 /*
2 * This file is part of Cleanflight and Betaflight.
4 * Cleanflight and Betaflight are free software. You can redistribute
5 * this software and/or modify this software under the terms of the
6 * GNU General Public License as published by the Free Software
7 * Foundation, either version 3 of the License, or (at your option)
8 * any later version.
10 * Cleanflight and Betaflight are distributed in the hope that they
11 * will be useful, but WITHOUT ANY WARRANTY; without even the implied
12 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
13 * See the GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this software.
18 * If not, see <http://www.gnu.org/licenses/>.
21 #include <stdbool.h>
22 #include <stdint.h>
23 #include <string.h>
25 #include "platform.h"
27 #if defined(USE_I2C)
29 #include "drivers/bus.h"
30 #include "drivers/bus_i2c.h"
32 static uint8_t i2cRegisteredDeviceCount = 0;
34 bool i2cBusWriteRegister(const busDevice_t *busdev, uint8_t reg, uint8_t data)
36 return i2cWrite(busdev->busdev_u.i2c.device, busdev->busdev_u.i2c.address, reg, data);
39 bool i2cBusWriteRegisterStart(const busDevice_t *busdev, uint8_t reg, uint8_t data)
41 // Need a static value, not on the stack
42 static uint8_t byte;
44 byte = data;
46 return i2cWriteBuffer(busdev->busdev_u.i2c.device, busdev->busdev_u.i2c.address, reg, sizeof (byte), &byte);
49 bool i2cBusReadRegisterBuffer(const busDevice_t *busdev, uint8_t reg, uint8_t *data, uint8_t length)
51 return i2cRead(busdev->busdev_u.i2c.device, busdev->busdev_u.i2c.address, reg, length, data);
54 uint8_t i2cBusReadRegister(const busDevice_t *busdev, uint8_t reg)
56 uint8_t data;
57 i2cRead(busdev->busdev_u.i2c.device, busdev->busdev_u.i2c.address, reg, 1, &data);
58 return data;
61 bool i2cBusReadRegisterBufferStart(const busDevice_t *busdev, uint8_t reg, uint8_t *data, uint8_t length)
63 return i2cReadBuffer(busdev->busdev_u.i2c.device, busdev->busdev_u.i2c.address, reg, length, data);
66 bool i2cBusBusy(const busDevice_t *busdev, bool *error)
68 return i2cBusy(busdev->busdev_u.i2c.device, error);
71 void i2cBusDeviceRegister(const busDevice_t *busdev)
73 UNUSED(busdev);
75 i2cRegisteredDeviceCount++;
78 uint8_t i2cGetRegisteredDeviceCount(void)
80 return i2cRegisteredDeviceCount;
82 #endif